# introduced

/ˌɪntɹəˈdust/ (US) · /ˌɪntɹədjˈuːst/ (UK)

Source: https://englishreference.com/word/introduced
Updated: 2026-06-19

## Senses

### 1. presented people

verb · CEFR B1

presented someone to another person for the first time.

For teachers: presented individuals to one another to initiate a social or professional acquaintance.

- My friend introduced me to her parents at the graduation party.
- The host introduced the keynote speaker to the audience, highlighting her significant contributions to the field of renewable energy.

Usage: Often used with the preposition 'to'.

### 2. started a new system

verb · CEFR B1

brought something new into use or started a new rule.

For teachers: implemented or brought a new system, law, or product into use for the first time.

- The company introduced a new flexible working policy last month.
- The government introduced strict environmental regulations to curb industrial pollution in the coastal regions.

### 3. non-native species

adjective · CEFR B2 · Technical

describes a plant or animal that was brought to a new place by people and is not naturally from there.

For teachers: referring to a species living outside its native distributional range, having arrived there by human activity.

- The grey squirrel is an introduced species that has caused problems for local wildlife.
- Ecologists are studying how introduced flora can disrupt local nutrient cycles and outcompete indigenous plants for resources.

## Examples

- The government introduced new laws to protect the local forest.
- Gray squirrels were introduced to the local park in the 1800s and quickly replaced the native red squirrels.
- When a non-native predator is introduced into a fragile ecosystem, it can cause a rapid decline in local bird populations that have no natural defenses against it.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.